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A highly sensitive and selective fluorescent biosensor for breast cancer derived exosomes using click reaction of azide–CD63 aptamer and alkyne-polymer dots

Anal. Methods, 2024, Advance Article
DOI: 10.1039/D4AY00146J, Paper
Dumei Ma, Yiting Luo, Xiaoya Zhang, Zehu Xie, Yinghua Yan, Chuan-Fan Ding
A fluorescence method based on Cu-triggered click reaction of azide modified CD63 aptamer and alkyne capped Pdots was developed for breast cancer derived exosome detection.
To cite this article before page numbers are assigned, use the DOI form of citation above.
The content of this RSS Feed (c) The Royal Society of Chemistry




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Electroanalysis overview: additive manufactured biosensors using fused filament fabrication

Anal. Methods, 2024, Advance Article
DOI: 10.1039/D4AY00278D, Minireview
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Robert D. Crapnell, Craig E. Banks
Additive manufacturing (3D-printing), in particular fused filament fabrication, presents a paradigm shift in the way electrochemical based biosensing platforms are produced, giving rise to a new generation of personalized and on-demand biosensors.
To cite this article before page numbers are assigned, use the DOI form of citation above.
The content of this RSS Feed (c) The Royal Society of Chemistry




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Symbiosis launches dual degree MBA in partnership with Macquarie University and Aston University




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Nickel-catalysed enantioselective cross-electrophile coupling reaction with the retention of the β-fluorine atom

Org. Chem. Front., 2024, 11,6459-6469
DOI: 10.1039/D4QO01555J, Research Article
Xin-Yi Shi, Xueyuan Yan, Xiaodong Tang, Shi-Jing Zhai, Genping Huang, Jun-An Ma, Fa-Guang Zhang
A nickel-catalysed enantioselective reductive cross-coupling reaction of a new monofluoromethyl building block with acid chlorides is developed to give chiral α-monofluoromethyl acyloin derivatives.
The content of this RSS Feed (c) The Royal Society of Chemistry




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Cobalt-catalyzed enantioselective reductive addition of ketimine with cyclopropyl chloride to construct chiral amino esters bearing cyclopropyl fragments

Org. Chem. Front., 2024, 11,6311-6318
DOI: 10.1039/D4QO01474J, Research Article
Jiangtao Hu, Tingting Xia, Xianqing Wu, Hongrui Feng, Jingping Qu, Yifeng Chen
Co-catalyzed asymmetric reductive addition of ketimine with cyclopropyl chloride has been realized to access diverse chiral amino esters bearing cyclopropyl fragments with broad functional group tolerance and excellent enantioselectivities.
The content of this RSS Feed (c) The Royal Society of Chemistry




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Enantioselective Addition of 3-hydroxyquinolin-2(1H)-one to Isatin and Pyrazole-4,5-dione Derived Ketimines

Org. Chem. Front., 2024, Accepted Manuscript
DOI: 10.1039/D4QO01895H, Research Article
Yue Wei, Guishun Bai, Jiamin Wu, Yi Hua, Tao Zhang, Congyong Yue, Hong Wang, Xiaoze Bao
The enantioselective reactivity of 3-hydroxyquinolin-2(1H)-ones was developed through their addition to isatin and pyrazole-4,5-dione derived ketimines, affording novel architectures featuring multiple natural products scaffolds in high yield with excellent enantioselectivities....
The content of this RSS Feed (c) The Royal Society of Chemistry




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Iridium-catalyzed asymmetric cascade allylation/lactonization of methyl salicylates: enantioselective construction of chiral benzodioxepinones

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01771D, Research Article
Bendu Pan, Yunru Wu, Yaqi Zhang, Xiaobo He, Long Jiang, Liqin Qiu
An efficient asymmetric cascade allylation/lactonization of methyl salicylates is achieved. The utilization of chiral-bridged biphenyl phosphoramidite ligand resulted in good results for the construction of a wide range of chiral benzodioxepinones.
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Magic effect of diphenylprolinol silyl ether for the enantioselective allenation of 2-alkynals

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO00984C, Research Article
Guolin Wu, Zhen Liu, Shiwen Fan, Wenyao Li, Xue Zhang, Hui Qian, Shengming Ma
Chiral diphenylprolinol silyl ethers have been successfully identified for the enantioselective allenation reaction of terminal alkynes and 2-alkynals, delivering a diverse set of chiral allenynes with high efficiency.
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Mechanism and origins of regioselectivity of selenium-catalyzed allylic amination reactions

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01794C, Research Article
Xiaoxiao Hu, Dengmengfei Xiao, Yu Chen, Yi Lu, Zhihan Zhang, Peiyuan Yu
The mechanism of selenium-catalyzed allylic amination reactions with different ligands has been explored using density functional theory calculations.
To cite this article before page numbers are assigned, use the DOI form of citation above.
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Investigation of the titanium-mediated catalytic enantioselective oxidation of aryl benzyl sulfides containing heterocyclic groups

RSC Adv., 2024, 14,35105-35113
DOI: 10.1039/D4RA07088G, Paper
Open Access
Maria Annunziata M. Capozzi, Angel Alvarez-Larena, Joan F. Piniella Febrer, Cosimo Cardellicchio
Enantiopure benzyl heteroaryl sulfoxides were obtained by asymmetric oxidation. However, two benzimidazolyl sulfoxides were found to be conglomerates.
The content of this RSS Feed (c) The Royal Society of Chemistry




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Reaction of unsymmetrical α-bromo-1,3-diketones with N-substituted thioureas: regioselective access to 2-(N-arylamino)-5-acyl-4-methylthiazoles and/or rearranged 2-(N-acylimino)-3-N-aryl-4-methylthiazoles

RSC Adv., 2024, 14,35585-35600
DOI: 10.1039/D4RA05436A, Paper
Open Access
Ranjana Aggarwal, Shilpa Sharma, Naman Jain, Dionisia Sanz, Rosa M. Claramunt, Patricia Delgado, M. Carmen Torralba
Hantzsch's [3 + 2] cyclic condensation of α-bromo-1,3-diketones with N-substituted thioureas.
The content of this RSS Feed (c) The Royal Society of Chemistry




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The role of gold in diversified commodity portfolios 

It serves multiple purposes as it acts as a hedge against inflation and provides stability during economic downturns



  • Gold & Silver

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Biosphere Reserves

Abstract: UNESCO Biosphere Reserves were first established under the Man and Biosphere Programme of UNESCO in the 1970s. Their mandate has expanded beyond conservation to include sustainable development and local capacity enhancement. As institutions under UNESCO, they also work on “building peace” by seeking to reconcile relations between peoples, and between people and the

The post Biosphere Reserves appeared first on Berkshire Publishing.




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Hydrate of neutral iron(III) complex based on pyruvic acid thiosemicarbazone ligand with abrupt spin-crossover with T1/2=340 K and wide hysteresis loop of 45 K

Dalton Trans., 2024, Accepted Manuscript
DOI: 10.1039/D4DT02901A, Paper
Maxim Andreevich Blagov, Alexander V. Akimov, Anatoly S Lobach, Leokadiya Zorina, Sergey Simonov, Konstantin Zakharov, Alexander Vasiliev, Natalia Spitsyna
The hydrate of neutral iron(III) complex based on pyruvic acid thiosemicarbazone ligand [FeIII(Hthpy)(thpy)]·H2O (1) was synthesized and characterized using FT-IR spectroscopy, powder and single-crystal X-ray diffraction, dc magnetic measurements, EPR...
The content of this RSS Feed (c) The Royal Society of Chemistry




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Effect of mono- and dinuclear thiosemicarbazone platinacycles in the proliferation of a colorectal carcinoma cell line

Dalton Trans., 2024, 53,17803-17818
DOI: 10.1039/D4DT01490A, Paper
Open Access
Francisco Reigosa-Chamorro, Sandra Cordeiro, M. Teresa Pereira, Beatriz Filipe, Pedro V. Baptista, Alexandra R. Fernandes, José M. Vila
The study of the antiproliferative activity of thiosemicarbazone platinacycles puts forward their high selectivity and low IC50 values.
The content of this RSS Feed (c) The Royal Society of Chemistry




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A mechanistic study of chiral manganese porphyrin-catalyzed enantioselective C–H hydroxylation reaction

Dalton Trans., 2024, Advance Article
DOI: 10.1039/D4DT02452D, Paper
Jing-Kun Gao, Wandong Chen, Junjie Tai, Zhengwei Chen, Hang Liu, Yuxin Du, Yiting Jiang, Yuanbin She, Yun-Fang Yang
This study uses DFT to explain the enantioselectivity of C–H hydroxylation by a chiral manganese porphyrin. A two-point hydrogen bonding favors pro-(S) C–H bond abstraction by 1.9 kcal mol−1, leading to (S)-hydroxylated products.
To cite this article before page numbers are assigned, use the DOI form of citation above.
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Fear or knowledge the impact of graphic cigarette warnings on tobacco product choices [electronic resource] / Donald S. Kenkel, Alan D. Mathios, Grace N. Phillips, Revathy Suryanarayana, Hua Wang, Sen Zeng

Cambridge, MA. : National Bureau of Economic Research, 2023




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Nobel laureate Geim urges young scientists to embrace curiosity and break routine

Prof Geim addressed the 15th Convocation of Hindustan Institute of Technology and Science (HITS).




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Merging inline crystallization and pulsed flow operation to enable enantiospecific solid state photodecarbonylation

React. Chem. Eng., 2024, Advance Article
DOI: 10.1039/D4RE00058G, Paper
Open Access
Bavo Vandekerckhove, Bart Ruttens, Bert Metten, Christian V. Stevens, Thomas S. A. Heugebaert
Photoelimination of α-chiral ketones in the solid state results in highly regio- and enantiospecific C–C bond formation. By combining inline crystallisation and pulsatile flow, the photochemistry of these slurries can now be run fully continuously.
To cite this article before page numbers are assigned, use the DOI form of citation above.
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Galacto-oligosaccharides regulates intestinal mucosal sialylation to counteract antibiotic-induced mucin dysbiosis

Food Funct., 2024, Accepted Manuscript
DOI: 10.1039/D4FO04626A, Paper
Laipeng Xu, Xuan Li, Shuibing Han, Chunlong Mu, Wei-Yun Zhu
Intestinal mucin offers a physical barrier to maintain host-commensal homeostasis. Glycosylation is essential for appropriate function of mucin. Galacto-oligosaccharides (GOS) have been used as a prebiotic with proved intestinal benefits,...
The content of this RSS Feed (c) The Royal Society of Chemistry




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Directed evolution of C-methyltransferase PsmD for enantioselective pyrroloindole derivative production

Catal. Sci. Technol., 2024, 14,6298-6306
DOI: 10.1039/D4CY00657G, Paper
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Diana A. Amariei, Julia Tenhaef, Thomas Classen, Benoit David, Tobias M. Rosch, Holger Gohlke, Stephan Noack, Jörg Pietruszka
The engineering of stereoselective C-methyltransferase PsmD through saturation mutagenesis led to improved activity for larger substrates. An automated process was designed and successfully applied for the mutant library production and screening.
The content of this RSS Feed (c) The Royal Society of Chemistry




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All-in-one Rh(III)-covalent organic framework for sustainable and regioselective C(sp2)–H bond functionalization

Catal. Sci. Technol., 2024, Advance Article
DOI: 10.1039/D4CY01098A, Paper
Luohe Wang, Junnan E, Xiubin Bu, Jing Zeng, Xiaobo Yang, Hua Fu, Zhen Zhao
RhCOF-SYNU-1 serves as a transition-metal catalyst, photocatalyst, and metal ligand, enabling regioselective C(sp2)–H bond functionalization and offering a sustainable approach for Rh(III) catalysis.
To cite this article before page numbers are assigned, use the DOI form of citation above.
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Aptamer-functionalized Nucleic Acid Nanotechnology for Biosensing, Bioimaging and Cancer Therapy

Nanoscale, 2024, Accepted Manuscript
DOI: 10.1039/D4NR04360J, Review Article
Xiaofang Zheng, Zhiyong Huang, Qiang Zhang, Guoli Li, Minghui Song, Ruizi Peng
Nucleic acids have enabled to fabricate self-assemblies and perform dynamic operations. Among different functional nucleic acids, aptamers can specifically bind to wide range of targets including proteins, viral antigens, living...
The content of this RSS Feed (c) The Royal Society of Chemistry




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Reply To: [Solved] Full Page Backgrounds on iOS (background-size: cover)

Hi.
@brandonmcconnell
A few years ago now but any chance you could elucidate how to implement your solution on a WordPress site to someone in the self-taught hack category? e.g. where would you put that code: function.php, style.php etc?
Can’t believe this problem existed the first place!
Many thanks




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iOS 18 to support more Indian languages than ever

Users will be able to customise the time on the lock screen with Indian numerals from 12 languages




ios

Biblia. Concordantiae in eadem, ex tum Veteri, tum Nouo Testamento, sacrisq[ue] canonibus: necnon & ex uiginti Iosephi De antiquitatibus, & Bello Iudaico libris excerptae. Annotationes ex sacris scriptoribus sumptae, & suis quaeq[ue] locis, &a

Lugduni : apud Hugonem à Porta, M. D. X L VI. [1546]




ios

Google rolls out iOS 16 lock screen widgets

Google has new widgets for Gmail and Google News app on iOS 16 



  • Mobiles & Tablets

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Apple releases iOS 16.1.1. Here’s how to download

6 steps to download iOS 16 updates




ios

Apple: Rapid security response test on iOS 16.2 beta

Settings has an option to remove the Apple iOS ‘security response’



  • Mobiles & Tablets

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How to send voice messages on iPhone iOS 16

A few changes have showed up with the iOS 16 update on iMessage




ios

Apple iOS 16.2 brings 5G network support to India

Apple iOS 16.2 brings end-to-end encryption for iCloud data, advanced data protection, and others



  • Mobiles & Tablets

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New Apple Intelligence features to come on October 28 with iOS 18.1 update: Report

There are still more AI features to come, like the ChatGPT-powered Siri, Genmoji, and Visual Intelligence, which will mostly be a part of the iOS 19 update




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Apple’s iOS 18.2 beta includes new Apple Intelligence features, ChatGPT integration 

Next week, the hardware company is set to release iOS 18.1 which will include the first set of Apple Intelligence features




ios

 iOS 18.2 beta 2 available to developers

The iOS 18.1 beta 1 update added ChatGPT integration with Siri, the iOS 18.2 beta 2 update will let developers subscribe to ChatGPT Plus directly from Settings




ios

Google to launch standalone Gemini app for iOS: Report

Users will also be able to use Gemini Live through the app which can’t be done through the Google app




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Lilly boosts immunotherapy pipeline with Armo BioSciences acquisition

The drug company will pay $1.6 billion to gain Armo’s IL-10 program




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Swallowable biosensor dispatches data from pigs’ bellies

Bioluminscent bacteria pair with electronics to detect blood in the gut




ios

DuPont biosciences headquarters debuts




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Precision BioSciences raises $110 million for off-the-shelf CAR-T and gene-edited crops




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Gingko Bioworks launches biosecurity initiative




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Electrochemistry-enabled Rh-catalyzed regioselective [4 + 1] and [4 + 2] cycloaddition of benzoic acid with alkynyl esters/amides

Green Chem., 2024, 26,10996-11002
DOI: 10.1039/D4GC03753G, Paper
Wei-Jung Chiu, Chung-Ming Sun
The reaction of benzoic acids with alkynyl esters/amides in the presence of a Rh-catalyst and AcOH as an additive to give phthalides by [4 + 1] annulation. In contrast, the additive NaOAc exclusively affords isocoumarins through the [4 + 2] pathway.
The content of this RSS Feed (c) The Royal Society of Chemistry




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Substrate-controlled regioselective hydrophosphorylation of allenes to enable photocatalytic synthesis of alkenylphosphoryl compounds

Green Chem., 2024, 26,11272-11279
DOI: 10.1039/D4GC03588G, Paper
Tian-Ming Yang, Xin-Lu Fan, Wei Shi, Xuefei Zhao, Xu-Hong Hu
A visible-light-induced hydrophosphorylation of allenes with H-phosphine oxides is demonstrated to give a diverse range of alkenylphosphoryl compounds in a highly stereoselective and regioselective manner.
The content of this RSS Feed (c) The Royal Society of Chemistry




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A green and sustainable multi-enzyme cascade for the biosynthesis of 1,3-propanediamine from crude glycerol in vitro

Green Chem., 2024, Advance Article
DOI: 10.1039/D4GC03777D, Paper
Daocheng Liao, Shiming Tang, Ying Lin, Suiping Zheng
This paper designs a novel multi-enzyme cascade reaction capable of efficiently synthesizing 1,3-propanediamine from glycerol in vitro.
To cite this article before page numbers are assigned, use the DOI form of citation above.
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iOS developer

Company: Indscope
Experience: 2 to 4
Salary: 3.00 to 4.20
location: Bengaluru / Bangalore
Ref: 24828923
Summary: 2-3 years of iOS application development, with extensive use of Obj-C (or Swift) IO, collections, algorithms, and well-known application frameworks




ios

AIFF looks to foreign hand and feet to make PIOs and OCIs eligible





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HelixStudios: Hayden Lee and Kane Fox

Brooding bad ass, Kane Fox is absolute fire as he drowns in twink superstar, Hayden Lee’s hot kisses. He envelops the boy’s body while tasting every inch of his tight, twink torso while massaging his piece over his pants. Once he’s teased Lee to the limit, the boy turns the tables, unzipping the jock’s jeans... View Article

The post HelixStudios: Hayden Lee and Kane Fox appeared first on QueerClick.





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Inhibition of glycosphingolipid biosynthesis reverts multidrug resistance by differentially modulating ABC transporters in chronic myeloid leukemias [Cell Biology]

Multidrug resistance (MDR) in cancer arises from cross-resistance to structurally- and functionally-divergent chemotherapeutic drugs. In particular, MDR is characterized by increased expression and activity of ATP-binding cassette (ABC) superfamily transporters. Sphingolipids are substrates of ABC proteins in cell signaling, membrane biosynthesis, and inflammation, for example, and their products can favor cancer progression. Glucosylceramide (GlcCer) is a ubiquitous glycosphingolipid (GSL) generated by glucosylceramide synthase, a key regulatory enzyme encoded by the UDP-glucose ceramide glucosyltransferase (UGCG) gene. Stressed cells increase de novo biosynthesis of ceramides, which return to sub-toxic levels after UGCG mediates incorporation into GlcCer. Given that cancer cells seem to mobilize UGCG and have increased GSL content for ceramide clearance, which ultimately contributes to chemotherapy failure, here we investigated how inhibition of GSL biosynthesis affects the MDR phenotype of chronic myeloid leukemias. We found that MDR is associated with higher UGCG expression and with a complex GSL profile. UGCG inhibition with the ceramide analog d-threo-1-(3,4,-ethylenedioxy)phenyl-2-palmitoylamino-3-pyrrolidino-1-propanol (EtDO-P4) greatly reduced GSL and monosialotetrahexosylganglioside levels, and co-treatment with standard chemotherapeutics sensitized cells to mitochondrial membrane potential loss and apoptosis. ABC subfamily B member 1 (ABCB1) expression was reduced, and ABCC-mediated efflux activity was modulated by competition with nonglycosylated ceramides. Consistently, inhibition of ABCC-mediated transport reduced the efflux of exogenous C6-ceramide. Overall, UGCG inhibition impaired the malignant glycophenotype of MDR leukemias, which typically overcomes drug resistance through distinct mechanisms. This work sheds light on the involvement of GSL in chemotherapy failure, and its findings suggest that targeted GSL modulation could help manage MDR leukemias.




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Endorepellin evokes an angiostatic stress signaling cascade in endothelial cells [Glycobiology and Extracellular Matrices]

Endorepellin, the C-terminal fragment of the heparan sulfate proteoglycan perlecan, influences various signaling pathways in endothelial cells by binding to VEGFR2. In this study, we discovered that soluble endorepellin activates the canonical stress signaling pathway consisting of PERK, eIF2α, ATF4, and GADD45α. Specifically, endorepellin evoked transient activation of VEGFR2, which, in turn, phosphorylated PERK at Thr980. Subsequently, PERK phosphorylated eIF2α at Ser51, upregulating its downstream effector proteins ATF4 and GADD45α. RNAi-mediated knockdown of PERK or eIF2α abrogated the endorepellin-mediated up-regulation of GADD45α, the ultimate effector protein of this stress signaling cascade. To functionally validate these findings, we utilized an ex vivo model of angiogenesis. Exposure of the aortic rings embedded in 3D fibrillar collagen to recombinant endorepellin for 2–4 h activated PERK and induced GADD45α vis à vis vehicle-treated counterparts. Similar effects were obtained with the established cellular stress inducer tunicamycin. Notably, chronic exposure of aortic rings to endorepellin for 7–9 days markedly suppressed vessel sprouting, an angiostatic effect that was rescued by blocking PERK kinase activity. Our findings unravel a mechanism by which an extracellular matrix protein evokes stress signaling in endothelial cells, which leads to angiostasis.